The fire was reported at 10:45 p.m. at 255 S. Hill St., said the Los Angeles Fire Department’s Margaret Stewart.
It was in an eighth-story apartment and was held in check by sprinklers, Stewart said.
“While a few residents self-evacuated, the rest of the building is sheltering in place,” she said. “There is only light smoke in the hallway.”
No injuries were reported.
Firefighters remained at the scene to remove water from the sprinkler activation, she said.